Nice. I've used MESS/MAME for a while to do TRS-80 Model II development.... yeah, really old. However, it is very processor-intensive to emulate all the hardware in a TRS-80 Model II; it would be interesting to see if my O2 would emulate a 4MHz Z80 system with all the support chips like a Model II.....

I see a 0.149 MAME on IRIX contributed by axatax, but I fear getting the latest 0.171 might be a real feat. I build it on CentOS 7 with the help of the Software Collections' DevToolSet-3 compiler chain. It would be a real treat to run IRIX that way, but that's getting pretty complicated, especially given the internal architecture of MAME.